Distribution and selectivity of Thiophene in ternary mixtures of {n-octane/n-hexadecane + Thiophene + acetonitrile / DMF} at 308.15K and atmospheric pressure

IF 2.8 3区工程技术 Q3 CHEMISTRY, PHYSICAL

Fluid Phase Equilibria Pub Date : 2024-12-18 DOI:10.1016/j.fluid.2024.114317

Nonhlanhla Gugu Mguni , Marcin Hubert Durski , Paramespri Naidoo , Kuveneshan Moodley , Deresh Ramjugernath

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引用次数: 0

Abstract

The removal of thiophenic sulphur constitutes ongoing research into the desulphurisation of fuels to comply with emission requirements and cleaner production. For the determination of effective solvents, this work considered and compared acetonitrile and N,N-Dimethylformamide (DMF) in the separation of thiophene from model fuels, which in this case was characterised by using n-octane and n-hexadecane. Ternary liquid-liquid equilibria (LLE) data were measured for four ternary systems, namely, {n-octane/n-hexadecane + thiophene + acetonitrile/DMF} at 308.15 K and atmospheric pressure. The NRTL equation was applied in the thermodynamic modelling, and consistency checks were executed using the maximum likelihood method on Aspen Plus® Version 12. The measured data was consistent with the calculated binary interactions with an average root mean square deviation (RMSD) of 0.001 and showed that all systems portrayed type I LLE behaviour. It was observed that DMF presents improved distribution ratios and selectivities to thiophene from the model fuels n-octane and n-hexadecane compared to acetonitrile.

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来源期刊

Fluid Phase Equilibria 工程技术-工程：化工

CiteScore

5.30

自引率

15.40%

发文量

223

审稿时长

53 days

期刊介绍： Fluid Phase Equilibria publishes high-quality papers dealing with experimental, theoretical, and applied research related to equilibrium and transport properties of fluids, solids, and interfaces. Subjects of interest include physical/phase and chemical equilibria; equilibrium and nonequilibrium thermophysical properties; fundamental thermodynamic relations; and stability. The systems central to the journal include pure substances and mixtures of organic and inorganic materials, including polymers, biochemicals, and surfactants with sufficient characterization of composition and purity for the results to be reproduced. Alloys are of interest only when thermodynamic studies are included, purely material studies will not be considered. In all cases, authors are expected to provide physical or chemical interpretations of the results. Experimental research can include measurements under all conditions of temperature, pressure, and composition, including critical and supercritical. Measurements are to be associated with systems and conditions of fundamental or applied interest, and may not be only a collection of routine data, such as physical property or solubility measurements at limited pressures and temperatures close to ambient, or surfactant studies focussed strictly on micellisation or micelle structure. Papers reporting common data must be accompanied by new physical insights and/or contemporary or new theory or techniques.